Joint source and polar coding

A transmitter entity, comprising:

• a processor configured to:
• order source bits based on respective priorities of the source bits;
• interleave the ordered source bits into a plurality of blocks, wherein a number of blocks comprising the plurality of blocks is determined based on a code rate, a polar code code size, and a number of the ordered source bits;
• map respective ordered and interleaved source bits in the plurality of blocks to respective polar coder ports, wherein the respective ordered and interleaved source bits in the plurality of blocks are mapped to the respective polar coder ports based on a respective priority of each ordered and interleaved source bit, and wherein a respective higher priority bit in a respective block is encoded to a higher capacity channel than a lower priority bit in the respective block;
• and
• perform polar encoding of the mapped bits.

A method comprising:

• ordering source bits based on respective priorities of the source bits;
• interleaving the ordered source bits into a plurality of blocks, wherein a number of blocks comprising the plurality of blocks is determined based on a code rate, a polar code code size, and a number of the ordered source bits;
• mapping respective ordered and interleaved source bits in the plurality of blocks to respective polar coder ports, wherein the respective ordered and interleaved source bits in the plurality of blocks are mapped to the respective polar coder ports based on a respective priority of each ordered and interleaved source bit, and wherein a respective higher priority bit in a respective block is encoded to a higher capacity channel than a lower priority bit in the respective block;
• and
• performing polar encoding of the mapped bits.